Yes. Under Jewish law, a man has a marital obligation to fulfil his wife sexually. Now, if he is perfectly capable of having sex with you, but merely refuses to do so, then he is potentially a “rebellious husband”, though this is difficult to prove – as usually each side blames the other for refusing to have sex . If, however, you are successful in proving this at the rabbinical court then you will be entitled to a “get” (Jewish divorce) from him.